-Originating from the Merino breed of sheep, this wool is naturally very fine and soft to the touch, while also having an incredible warmth-to-weight ratio from microscopic cortices of dead hair that trap body heat and store moisture. When wet, this wool can absorb 30% of it’s weight in water before feeling wet to the touch, making it an excellent insulator in the harshest of conditions. In addition to all these benefits, merino is also naturally antibacterial, making it excellent for multi-day excursions.